| The prototype flew for the first time in August 1925. An unequal-span biplane, intended for reconnaissance duties, it was of all-metal construction with corrugated sheet covering. The original 298kW Liberty engine was replaced by a 336kW Napier Lion, the aircraft then being redesignated R-3NL The first 12 series aircraft had Liberty engines but the next 18 had the Soviet development of this powerplant, which was designated M-5. The final 79 aircraft with the 336kW Lorraine Dietrich engine were designated R-3LD, and one ANT-3 was tested with a 507kW BMW VI. Most R-3s saw military service, but a few retaining the ANT-3 designation were flown as mailplanes or used for liaison and for propaganda flights. The R-3LD version had a maximum speed of 205km/h, was armed with three 7.7mm machine-guns and could carry 10 10kg bombs on external racks. Plans for a Shturmovik version with 400kg of armour protection came to nothing.
 | A three-view drawing (552 x 782) |
MODEL | ANT-3 |
CREW | 2 |
ENGINE | 1 x M-5, |
WEIGHTS |
Take-off weight | 2103 kg | 4636 lb |
Empty weight | 1351 kg | 2978 lb |
DIMENSIONS |
Wingspan | 13.0 m | 43 ft 8 in |
Length | 9.9 m | 33 ft 6 in |
Height | 3.9 m | 13 ft 10 in |
Wing area | 36.0 m2 | 387.50 sq ft |
PERFORMANCE |
Max. speed | 204 km/h | 127 mph |
Ceiling | 4600 m | 15100 ft |
Range | 750 km | 466 miles |
ARMAMENT | 3 x 7.62mm machine-guns |
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